Difference between Heat and Specific Heat Capacity
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HEAT CAPACITY |
HEAT CAPACITY SPECIFIC |
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Definition |
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| It is defined as the quantity of heat required to produce unit temperature change. | It is the quantity of heat to change the
the temperature of a unit mass of a substance by one degree Celcius (0C). |
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Unit |
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| Its S.I unit is J/k. | Its S.I unit is J/kg K. |
|
Value |
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| Its value depe1ids on the mass and nature of the substance. | Its value depends on the nature of the
substance. |
HEAT CAPACITY
Take a number of samples of different amounts of the same substance (say, copper) and heat them through the same range of temperature. It will be found that the heat required for this purpose is different for different samples. If Q is the amount of heat needed to raise the temperature of a sample through T, then the ratio is known as the heat capacity of the sample (hot of the Substance). It is denoted by C so that
Unit
In the system international the unit of heat capacity is JK-1.
SPECIFIC HEAT CAPACITY
Definition
The quantity of heat required to change temperature fone kg mass of a substance by one
Kelvin Is called specific heat
EXPLANATION
- Take equal amounts of different substances, for example, copper, iron, and water.
- Heat them for a given interval of time under the same flame so that they all absorb the same amount of heat energy from the source.
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